Refractometers allow user to quickly and accurately determine a number of statistics including refractive index, Brix value, HFCS, or user-defined concentrations of liquids in various measurement ranges. Select models allow samples in the form of solids or pastes to be measured just as easily as liquids. Digital refractometers include LCD displays with user-friendly controls and easily interpretable readings. The refractometers deliver highly precise measurements while still maintaining small footprints in limited workspace conditions. Various models with features like automatic temperature control, calibration tool, digital data storage of up to thousands of test results are available.